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Table 6 Summary of fatigue failure tests: maximal load, vertical & lateral stiffness, number of cycles (all values prior to failure) and failure types. The values of the first 5 groups have been retrieved from our previous studies and reported here for comparison purposes. All the differences were not statistically significant

From: Static and fatigue strength of a novel anatomically contoured implant compared to five current open-wedge high tibial osteotomy plates

Specimen Maximal load [N] Vertical stiffness KV [N/mm] Lateral stiffness KL [N/mm] Number of cycles Failure types
TomoFix std. 3 1280 1350 2000 > 60000 2
TomoFix std. 4 1440 2000 2500 > 80000 2
TomoFix std. 5 1760 2500 2200 > 120000 2
 Mean: 1.5 1950 2233 > 86000  
 SD ±: 0.2 577 252 30550  
PEEKPower 3 1440 2000 2500 > 80000 2
PEEKPower 4 1280 1950 2140 > 60000 2
PEEKPower 5 1440 2785 2250 > 80000 2
 Mean: 1.4 2245 2297 > 73000  
 SD ±: 0.1 468 184 11500  
iBalance 3 1760 4000 3600 > 120000 2,4
iBalance 4 1760 3000 3400 > 120000 2
iBalance 5 1920 3000 2952 > 140000 2
iBalance 6 1760 3500 2500 > 120000 1,2
 Mean: 1.8 3375 3113 125000  
 SD ±: 0.1 479 490 10000  
TomoFix sm 3 1280 2200 2000 > 60000 2,3
TomoFix sm 4 1280 1750 1500 > 60000 2,3
TomoFix sm 5 1760 2000 2300 > 120000 1,2
 Mean: 1.4 1983 1933 > 80000  
 SD ±: 0.3 184 330 28,300  
Contour Lock 3 2400 2100 4400 > 200000 2
Contour Lock 4 1760 2300 2400 > 120000 2
Contour Lock 5 2400 2700 2600 > 200000 1,2,3
 Mean: 2.2 2367 3133 173000  
 SD ±: 0.4 250 900 37700  
Activmotion 3 2240 2500 6300 > 180000 2
Activmotion 4 2240 2500 2900 > 180000 2
Activmotion 5 1600 2500 4750 > 100000 2
Activmotion 6 1600 3100 5100 > 100000 2
 Mean: 1.9 2650 4763 140000  
 SD ±: 0.3 260 1219 40000